I've got a couple of questions about my C. First did they make a conversion to change it to a distributer from a mag. My service manual just talks about mag timing. And when timing it do you use the hole on the side or the bottom, I do not see any marks on the flywheel through eather hole. And what is the difference between a B and a C I always thought it was the front end but my operators manual shows C's with wide fronts. When I changed the trans oil I pulled all three plugs out of the bottom side,two under the trans and one under the pto. . Then refilled it the book says 6qt and a extra one with the pto mine would only hold 5 is there something I'm missing there?